Twitter User Lookup Request Error Confusion – Twitter API

I have activated my app after getting approval of my Twitter developer account. I am trying to get twitter account associated with an email/phone number using Twitter Api.
It works perfect with params like screen_name,user_id but while trying email or phone number as a param the

Response says :

Could Not Authenticate you

Code is

import requests

url = "https://api.twitter.com/1.1/users/lookup.json?map=true&phone=1234567890"
payload = {}
headers = {
  'Authorization': 'OAuth realm="http%3A%2F%2Fapi.twitter.com",oauth_consumer_key="<consumer_key>",oauth_token="<outh_token>",oauth_signature_method="HMAC-SHA1",oauth_timestamp="1595318479",oauth_nonce="<nonce>",oauth_version="1.0",oauth_signature="<sig>"'
}

response = requests.request("GET", url, headers=headers, data = payload)
print(response.text.encode('utf8'))

Response :

{
    "errors": [
        {
            "code": 32,
            "message": "Could not authenticate you."
        }
    ]
}

What are the reasons and suggestions on this ?

Will appreciate the positive feedback.